Isuzu NHR 4J Series, Workshop Manual

Page: 179 / 406

6A1 – 44 4JB1/4JB1T/4JB1TC/4JG2 - ENGINE
Valve Clearance Adjustment
Above works refer to “ROCKER ARM SHAFT
ASSEMBLY” Section in this manual.
16. Cylinder Head Cover
• Apply engine oil to the rocker arms and the valve
spring.
• Install the cylinder head cover gasket to the cylinder
head cover.
• The gasket must be perfectly smooth with no loose
areas.
• Tighten the cylinder head cover nuts to the specified
torque in the numerical order shown in the illustration.
Cylinder Head Cover Torque N ∙ m (kg ∙ m/lb ∙ in)
13 (1.3/113)
15. By-Pass Hose
14. Front Exhaust Pipe
• Install the pipe to manifold and tighten bolts and nuts
to the specified torque.
W/Exhaust Brake Manifold Nut Torque N ∙ m (kg ∙ m/lb ∙ ft)
37 (3.8/27)
WO/Exhaust Brake
Manifold Nut Torque
N ∙ m (kg ∙ m/lb ∙ ft)
40 (4.1/30)
Pipe Stay Bolts Torque N ∙ m (kg ∙ m/lb ∙ ft)
40 (4.1/30)
13. Vacuum Actuator Hose (Exhaust Brake Model)
• Install the vacuum hose to the vacuum actuator.
12. A/C Compressor Assembly (A/C Model)
• Install the A/C compressor fixing bolts and tighten
bolts to the specified torque.
Compressor Bolts Torque N ∙ m (kg ∙ m/lb ∙ ft)
37 (3.8/27)
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